(19)

(11)

EP 2 229 621 A2

(12)

(88) Date of publication A3: 11.09.2009 (43) Date of publication: 22.09.2010 Bulletin 2010/38 (21) Application number: 09700745.4 (22) Date of filing: 07.01.2009

(51) International Patent Classification (IPC):  G06F 9/315(2006.01) G06F 9/318(2006.01) G06F 9/308(2006.01) (86) International application number: PCT/EP2009/050090 (87) International publication number: WO 2009/087152 (16.07.2009 Gazette 2009/29)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 11.01.2008 US 972689 (71) Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION Armonk, New York 10504 (US)	(72) Inventors: GREINER, Dan San Jose California 95125-5021 (US) SLEGEL, Timothy Staatsburg New York 12580 (US) VON BUTTLAR, Joachim 71101 Schoenaich (DE) (74) Representative: Litherland, David Peter  IBM United Kingdom Limited Intellectual Property Department Hursley Park Winchester, Hampshire SO21 2JN Winchester, Hampshire SO21 2JN (GB)